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Finding the Fourth Proportional to 11,967.21, 16,520.15 and 8,566.89

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Solution

The fourth proportional to 11,967.21, 16,520.15 and 8,566.89 is: 11,826.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,967.21 : 16,520.15 = 8,566.89 : x
  2. Step 2: Convert to fraction form
    11,967.21/16,520.15 = 8,566.89/x
  3. Step 3: Cross multiply
    11,967.21x = 16,520.15 × 8,566.89
  4. Step 4: Simplify right side
    11,967.21x = 141,526,265.00
  5. Step 5: Solve for x
    x = 141,526,265.00/11,967.21
  6. Step 6: Final answer
    x = 11,826.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.